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本文对小偃麦异附加系31504的部分数量性状进行了遗传分析,进而对31504进行了种质评价.结果表明,株高、穗下节间长、抽穗度、开花期、千粒重、穗粒数等6个性状的遗传与异染色体有关;异源染色体上携有显著降低株高作用的基因,且以加性效应为主,31504是一个良好的新矮源.
In this paper, genetic analysis was conducted on the quantitative traits of part of the additional line 31504 of Magnoliaceae var. Mongolica, and the germplasm evaluation of 31504 was carried out. The results showed that the heredity of six traits such as plant height, internode length of ear, heading degree, flowering stage, 1000-grain weight and grain number per spike were related to heterochromosomes. The heterologous chromosomes contained genes that significantly reduced plant height, Additive effect-based, 31504 is a good new dwarf source.